Non-circular-can-cover-lining machine



J. BRENZINGER.

NON-CIRCULAR CAN COVER LINING MACHINE.

APPLICATION HLED Aue.9,1918.

1,347,483, Patented July 2o, 1920'.

2 SHEETS-SHEET 1.'

Patented July 20, 1920.

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NON-CIRCULAR CAN COVER LINING MACHINE.

APPLICATION FILED AUG.9, 1918.

lllllllllll Cri JUIIIUS BRENZINGER, OF

MACHINERY COMPANY, OF E FAIRFIELD, CONNECTICUT, ASSIGNOR TO SANITARY CAN LLSVORTH, MAINE, A CORPORATION OF MAINE.

NON -CIRCULAR-CAN -CO/"ER-LININ G MACHINE.

Application filed August 9.

To all /wwm t mcyconcewi:

Specification of Letters Patent.

it known that LJULiUs BRENZINGER, a citizen of the United States, residing at Fairfield, in the county of Fairneld and State of Connecticut, have invented certain new and useful Improvements in Non- Circular-Can-Cover-Lining Machines, of which the following is a specification.

in connection with covering and sealing sheet-metal containers, commonly known as tin cans, by what is known asthe seaming or double-seaming pr found necessary to provide ocess, it has been a suitable packing between the layers of metal which aie intercurled and compressed to form the seam, and this packing is usually provided in the form of a self-solidifying liquid coinpound which is deposited along the edge of the cover to constitute an adhering gasket. in more common types of present machines, the liquid is delivered upon the cover-edge from a. suitable dispensing nozzle, the cover being rotated the entire edge thereof or otherwise moved to present progressively to said nozzle-a process which doubtless may be said to be fairly satisfacto covers are being lined, but more serious r f when round which presents difliculties in connection with non-circularsuch as oblong orso-called square-can covers.

The .present invention relates generally to machines for compound to can lar reference to square covers, and has in applying this liquid lining covers, with more part-icunon-circular or so-called view the provision of a comparatively simple machine, and one which will not only be efficacious and dependable but which may be successfully operated comparatively high speed.

ly invention will be more readily understood by reference to the accompanying drawings, forming a part of this specification, in which l have illustr and convenient embodiment which` ated a practical thereof, and in i Figure 1 is a top plan view, partly in section z Fig. 2 is a transverse vertical section,

taken substantially on the line 2-2 l, and i F 3 is a fragmentary of rig.

' sectional view Referring now to the dra numeral 5 designates a suit wings in detail, able supporting Patented July 20, 1920.

1918. Serial No. 249.105.

frame or table-top on which are mounted the standards 6 G in which is journaled the shaft 7. whereby steam or other hot fluid may be passed therethrough, the ends of the shaft being threaded for the reception of plugs 8 8 having longitudinal bores 9 and which provide connections for the tubes l0 10 leading from any suitable source or sources of steam or hot-fluid supply. I have shown this shaft driven from a pulley ll mounted thereon which is designed to be connected in the usual manner with a main driving elenient.

hiounted on the shaft 7 is the wheel 12, and as it is necessary to retain many kinds of lining compounds in a. heated condition until final application thereof to the cover, .l have shown this wheel as hollow, providing a chamber 13 into which steam or other hot fluid may be directed from the shaft 7 and thus heat said wheel and any substance adhering thereto. The wheel l2 is also preferably provided with a rounded periphery ll for a purpose which will subsequently be made clear.'

Supported from the table-top or base 5 by brackets 15 l5 is the open tank 16, adapted to contain a suitable liquid or semi-liquid lining compound 17, and this tank is so positioned with relation to the wheel l2 that the lower side of the latter dips into the liquid V1T when a suitable quantity thereof is placed or remains in the tank. Obviously, a. thin nlm or coating of the liquid will adhere to.

the periphery of the wheel as the latter is revolved bv the shaft 7.

Non-circular cans are generally either Square or oblong, so-called, in'lateral contour, with substantially rounded corners, and the covers or ends therefor, of course, are of corresponding configuration. Relatively little difficulty is encountered in attempting to apply a seam-packing peripheral lining to round covers. lt is only necessary, in general, to establish relative rotary movement between the cover and a discharge nozzle or ot form of dispensing device. lVhen the cover is not round, however, pure rotary movement will obviously not suflice, and in the lining opera-tion movement of either the dispensing device or the cover must be positively guided in a. deviating or dellecting-although regular or symmetricalHpa-th. The difliculties to be overcome in I have shown this shaft 7 as hollow, u

' pressing said vwise secured attempting to so move and guide a regulable dispensing device will be apparent, an

while of less degree in connection with attempts to so move and guide the cover, it must be borne in mind that cans areA made in many different sizes, each size of can requiring an end or cover of corresponding dimensions, anda cover-lining machine should be quickly and readily adapted and adjusted for covers for cans of any of the various standard sizes. This necessitates the provision not only of means for insuringy positively guided regularly-deviating movement of the cover and its support, but also of means for this purpose which are capable of quick and ready manipulation and adjustment, by way'of substitution of parts or otherwise, to vary path, or the area of the surface circumscribed thereby, or Vboth thereof.

In the embodiment of my invention herein shownV and described, present'the' edge of the cover to the coated periphery of the wheel 12, and it will be apparent that by wheel, upon revolution of both the wheel and the cover, in intersecting planes, what may be termed a linear portion of the coating will be scraped from the wheel and be deposited along the cover-edge-or in the peripheralvgroove or gutter usually provided at the cover-edge for this and other purposes. lf the cover is circular, it will be apparent that simple rotation thereof, the edge being held against the periphery of the re-f volving wheel, will result in the depositing along the cover-edge-or in-the peripheral groove or gutter to which l have referredcoalescing layers of the semi-liquid and slightly viscous compound which, upon drying or hardening to a greater or lesser degree,form what is termed the lining skin which serves as a hermetic gasket or seampacking when the cover is seamed or otherto the body portion of the container. Y

This liquid composition may obviously be similarly applied to the edge of a non-circular cover provided movement of the latter with respect to the periphery of the revolv-4 ing wheel is so controlled and directed as to maintain at all times continuous contact betweentheshifting cover-edge and the wheel.`

VTo yeffect such control and direction', l have shown a lever-arm 18 pivoted at one end on the stud 19 on the upper face of the tabletop or base V5 and thus being adapted to oscillate toward and away from the wheel 12.

Intermediate the ends of the lever-arm 18v is journaled the short shaft 20, the lower end ofwhich swings clear of the table-top 5.

l At the upper end of the shaft 2O is mounted the chuck 24, the horizontal or lateral contour of which corresponds to that of the cover 25-which for the purposes of this lvertical shaft 27, atl the upper ,end

pinges a cam 29 mounted either the course of the cover edgewise against the tional contour,

the cover, Vwhereby the cover is laterally forces ofthe lining 1 supported against the operation. Y

Journaled in the table-top or base 5 is the of which againstwhich im- Y, on'the shaft 20. As this cam29 is to control oscillating movement of the lever-arm 18 to retain the coveredge in contactxwith the periphery of the wheel 12 during rotation-,of the cover-carrying chuck 24, it will-'be apparent that, first, theV contour of the cam must correspond to is mounted the roller 28 that of the-chuck-tha't is, to that of the can cover, which wheel' and the edge of the cover, and exceptV I amounts to the same thingg Y and, second, that the contour of the periphery of the roller 28 must correspond to the cross-sectional contour ofthe periphery of the wheel 12, the curvature being of corresponding `degree--that is to'say, if the periphery of the wheel is circular in cross-secthe diameter of the circle and the diameter of the roller 28 should be the same. It will now be apparent that if the shaft 2O is rotated, with the cam V29 yieldingly pressed against the roller 28, the leverarm 18 will be oscillated and the chuck-supported cover 25 rotated with the edge thereof continuously in contactr with the coated periphery of the wheel 12. f

" To rotate the shaft 2O around a regularly shifting axis, I mount upon the shaft 2T, preferably below the roller 28, a` pinion 30 with the teeth of which meshthe teeth of a gear 31 on the shaft 20 below the' cam 29, The contour of the gear'l also corresponds to that'of the chuck Y2li and the chuck-supported cover 25,-and it will be noted that the lpath of travel of the cover edge is directed and controlled by the cam 29 and not by the gear 31. ln the latter case, either the gearteeth would have to be cut with such mathe- Y matical precision as to render-excessive the cost of production, or all forces tending to move the arm 18 toward the wheel 12 would be'oppfosed only Vby contact between the possible extent with the manual operation of positioning a cover on the chuck and that of removing from said chuck a lined cover. For this purpose, I have shown an arm or bracket 32 mounted on the iever-arm 18 and projecting over the chuck 24. At the free end of this arm 32 I slidably mount a loose rod or stem 33 yieldingly pressed vdownwardly by the coil-spring 34. At the lower end of the rod-or stem 33 is mounted what may be termed a presser-shoe 35 adapted to impinge against the top face of the can cover 25 and yieldingly press said cover against the chuck 24. The lower face of this presser-shoe 35 is curved or convex, as shown, in order that a cover may be readily slipped thereunder for the lining operation and removed from the chuck thereafter, the spring 34 yielding readily to the manual forces exerted in positioning and removing the covers, but the power thereof being sufficient to overcome the frictional tilting forces of the wheel 12.

I have shown the lever-arm 18 yieldingly pressed in the direction of the wheel 12 by means of a spring 36 in tension between said arm and a hook 37 or other suitable anchorage on the table-top or base V5.

The shaft 27 may be driven in any suitable manner, either from the shaft 7 or directly from the source of power through the interposition of any common and wellknown power -transmitting instrumentalities, such as a gear-train or a chain and sprocket, this being so obvious an expedient that I have considered it unnecessary to illustrate the same in the drawings.

-In order to prevent the adhesion ofan excess of liquid material to the periphery of the wheel 12, and to make more uniform the film or coating thereon, I mount upon the side of the tank 16 a scraper 38, the configuration of the edge of which corresponds to that of the periphery of said wheel. It is, of course, desirable that a substantially thin and uniform layer of the liquid lining compound be carried by said wheel to the cover edge, and proper relative positioning of this scraper 3S will insure such uniformity and the desired volume, the excess or surplus material being directed back into the tank.

Covers or ends for tin cans7 designed to be hermetic-ally Vsealed are now almost invariably provided with off-set fianges, and the flange-edge is ofttimes longitudinally curled or bent-primarily for the purpose of preventing nesting of the covers when stacked, so that each may be readily fed from the bottom of a stack thereof either for the lining or the seaming operation, or both thereof, but possibly also for the purpose of forming a groove or gutter 39 for the reception and retention of the lining compound when applied in liquid form, particularly if the latter is delivered to the cover from a dispensing spout or nozzle. In so-called round covers, this groove or gutter' is continuous, but in connection with oblong or so-called square coversI have found it preferable to curve or bend the flange on two opposite sides only of the cover, as and for the reasons clearly set forth in an earlier Patent, No. 1,296,474, granted to me March 4, 1919. Proper size and contour of the cam ,29, however, will insure the eective presentation of the curled edge of the cover, as shown in Fig. 2, and also the flat or uncurled edge thereof, as shown in Fig. 3, which is also illustrative of operation in connection with a continuously iiat iange.

From the foregoing, it will doubtless be apparent that I have provided a machine of exceedingly simple construction and operation by means of which non-circular can covers may be readily, eiiicaciously and dependably lined.

Many modiiications of minor details of my improved non-circular can cover lining machine will doubtless readily suggest themselves to those skilled in the art to which it appertains, and I therefore do not desire to limit my invention to the specific construction herein shown and described.

I claim as new and desire to secure by Letters Patent:

1. In a machine of the character described, the combination of a rotating element having a smooth face adapted to receive a liquid coating, means for supporting a can head or cover in edgewise disposition relative to said face, and means for rotating said supporting means, said element and said supporting means being relatively shiftable toward and away from each other during rotation thereof.

2. In a machine of the character described, the combination of a rotating element having a smooth face adapted to receive a liquid coating, means for supporting a can head or cover in edgewise disposition relative to said face, and means for rotating said supporting means, the latter being shiftable toward and away from said element during rotation thereof.

3. In a machine of the character described, the combination of a rotating element having a smooth face adapted to receive a liquid coating, means for supporting a can head or cover in edgewise disposition relative to said face, and means for rotating said supporting means, said element and said supporting means being relatively shiftable toward and away from each other during rotation thereof and springpressed in the direction of each other.

4. In a machine of the character described, the combination of a rotating element having a smooth face adapted to receive a liquid coating, means for supportceive la liquid coating, means forl supporting a can head or cover in edgewise dis-v position relative to said face, meansv for rotating said supporting means, and means for relatively shifting said element and said Asupporting means toward and away from each other during rotation thereof.

6. In a machine of the character described, the combination of a rotating element having a smooth face adaptedto receive va Vliquid coating, means for supporting a. can head or cover in. edgewise disposition relative to said face, means for rotating said supporting means, and means for shifting said supporting means toward and awayV from said element during rotation thereof.

l'2'. In a machine of the character described,ithe combination of a 'rotating elementhaving a smooth face adapted tore- -ceive a liquid coating, means for supporting a can head or cover in edgewise disposition relative to said face, means for ro- Y tating said supporting means, positive means Vlor relatively shifting said element and said supportingvmeans away from each other and yielding means for relatively shifting the Vsame :toward each other during rotation thereof.`

8,-In a machine of the character described, the combination of a rotating ele-V ment having asmooth-face adapted to receive a liquid coating, means for support- Ving-a can head or cover in edgewise vdisposition relative to said face, means for rotatingrsaid supporting means, positive means for shifting said 'supporting means away K from said element and yielding means for 'shifting the same toward `said element duringrotation thereof.

9. In aI-machine ofthe character described, the combination, with a rotatable element having a smooth face adapted to receive a'liquid coating, a rotatable non-circular chuck for supporting a can headof corresponding Y contour in edgewise disposition relative to the coated face of said element, a reciprocating carriage for. said chuck, adriving4 pinion, and a chuck-rotatin Crear on said carriage in mesh with said p Y o face adapted to re-" scribed,

pinion, the general peripheral contour of said gear corresponding' toV that. of Vsaid chuck. Y

10. In a machine of they character described, the combination, with a rotatable element having a smoothY faceiadapt'ed to receive a liquid coating, a rotatable non-circular `chuck for supporting a Vcan head of corresponding contour in edgewise disposition relative tothe coated face of said element, a reciprocating carriage for said chuck, a driving gear on said carriagel in mesh with said pinion,-the general peripheral contour of said gear correspondingV to that ofsaid chuck, and means yieldingly pressing said carriage in the direction of said element.

ll. In a machine of the character vdethe combination, with a tank adapted to contain a liquid compound, and a ,roller adapted to dip into the liquid in said tank,said roller having-a transversely circular peripheral face, of a rotatable noncircular chuck for-supporting a can head of Vcorrespondii'ig contour in edgewise disposition relative to the coated faceY of said roller, a reciprocating carriage for said chuck, a driving pinion ofthe same mean diameter as the diameter of the transverse circle of the rollerperiphery, anda chuckrotating gear, on said carriage in mesh with lsaid pinion", thd general ,'peripheral contour of said gear corresponding with that of said chuck. Y 12. In a1 machine of Vthe character described, the combination, with a tank adapted to containa liquid compound, and

-a roller adapted to dip into the liquid in said tank, of a. rotatable non-circular chuck forsupporting a can head of 'corresponding contour in edgewise disposition relative to the coated periphery of said roller, a recipvi'ocating carriage for said chuck, a driving pinion, said roller having a transverselyV circular peripheralfface of the same diameter as the mean diameter of said pinion, a cl'iuck-rotating gear on said carriage in mesh with said pinion, the general peripheral contour of said gear corresponding to that ofsaid chuck, and means yieldingly pressing-,said carriage in the direction of said roller. Y

`In testimony of the foregoing, I .have hereunto'set my hand in the Vpresence of two witnesses. Y

, JUL'IUS BRENZINGER. `lilitnesses: Y i ACONRAD D. TRUBENBAGH,

Groen 'GEHRUNQ pinion, a chuck-rotating 

